Capture exception on sentry if something is wrong

app/controllers/errors_controller.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
 class ErrorsController < ApplicationController
-  rescue_from Exception do
+  rescue_from StandardError do |exception|
+    Sentry.capture_exception(exception)
     # catch any error, except errors triggered by middlewares outside controller (like warden middleware)
     render file: Rails.public_path.join('500.html'), layout: false, status: :internal_server_error
   end

spec/system/errors_spec.rb

@@ -3,6 +3,15 @@
 describe 'Errors handling', js: false do
   let(:procedure) { create(:procedure) }
 
+  scenario 'not found returns 404' do
+    without_detailed_exceptions do
+      visit '/nonexistent-path'
+    end
+
+    expect(page).to have_http_status(:not_found)
+    expect(page).to have_content('Page non trouvée')
+  end
+
   scenario 'bug renders dynamic 500 page' do
     procedure.revisions.destroy_all # break procedure